Abstract: A system for monitoring a fetal heartbeat sound has a sensor matrix adapted to be placed adjacent to a fetus, a processor for receiving signals transmitted by the sensor matrix, a processor for receiving signals transmitted by the sensor matrix, and a display connected to the processor so as to provide a humanly perceivable indication of the heartbeat sound. The sensor matrix has a plurality of sensors of which at least one of which is facing the fetus. The processor identifies a fetal heartbeat sound from among other sounds. The sensor array is affixed to a wearable article that is adapted to be worn by mother.

Abstract: A method for automatically determining the 3D position and orientation of a radio-opaque medical object in a living body using single-plane fluoroscopy comprising: (a) capturing a stream of digitized 2D images from a single-plane fluoroscope; (b) detecting an image of the medical object in a subset of the digital 2D images; (c) applying to the digital 2D images calculations which preserve original pixel intensity values and permit statistical calculations thereon, using (i) multiple sequential determinations of a midline of the medical object image, (ii) a plurality of unfiltered raw-data cross-sectional intensity profiles perpendicular to each sequentially-determined midline, (iii) removal of outlier profiles from each plurality of profiles, and (iv) statistically combining each plurality of profiles to estimate image dimensions, thereby to measure the medical-object image from a final estimation of image dimensions; (d) applying conical projection and radial elongation corrections to the image measurements;

Abstract: An extended wear electrocardiography patch is provided. A flexible backing is formed of an elongated strip of stretchable material. A circuit is affixed to an outward-facing surface of the flexible backing and includes a pair of circuit traces each originating with one of the ends of the elongated strip. A pair of electrocardiographic electrodes are each electrically coupled to one of the circuit traces and conductively exposed on a contact surface of each end of the elongated strip through an opening. When the flexible backing is at rest, the electrodes are approximately centered over their respective openings on a patient's skin and during bending of the flexible backing, the electrodes slide over at least a portion of the flexible backing while maintaining electrical contact between the electrodes and the patient's skin.

Abstract: 1. The Smart Brain website will allow an individual to simulate traveling to different regions of the brain and give themselves an electrical charge to that site. 2. The Smart Brain web site can simulate giving electrical stimulations or shocks to different areas of the brain. 3. The Smart Brain web site can be used as a psychological tool for online hypnosis. 4. It is theorized that the Smart Brain simulated stimulations can have the same effect on the brain as certain medicines or drugs have. 5. The Smart Brain System can be used to input information to the brain to create new brain cells. 6. The Smart Brain System can be used to input new brain waves into the brain. 7. The Smart Brain System can be used as a type of reflexology to the brain such as in hand reflexology. 8. The Smart Brain System can psychologically remove negative thoughts or concepts from the brain. 9. The Smart Brain System can psychologically input positive thoughts and ideas into the brain. 10.

Abstract: A method and an apparatus for measuring a bioimpedance are disclosed. The apparatus includes a first electrical signal generator configured to generate a first electrical signal to measure a bioimpedance of an object. The apparatus also includes a compensation signal generator configured to generate a compensation signal to compensate a biosignal measured based on the first electrical signal, and an amplifier configured to amplify the compensated biosignal.

Abstract: A trolley system configured to transport a patient within an MRI environment includes a patient support portion, a base portion configured for movement relative to a floor, a lift coupled to the patient support portion and the base portion, an electric motor coupled to the lift, and an electric blower coupled to the patient transfer device. The lift is configured to change the elevation of the patient support portion relative to the base portion. The motor is mounted such that the elevation of the motor is fixed relative to base portion. The trolley system is positionable adjacent an MRI apparatus within the MRI environment and the magnetic field of the MRI does not interfere with the operation of the motor or blower. The trolley system may further include a patient transfer device having an air bearing. The blower is configured to deliver air to the air bearing.

Abstract: An integrated catheter placement system for placing a catheter in a vasculature of a patient. The system includes a system console with a tip location mode and an ultrasound mode viewable on a display, a magnetic assembly emanating a magnetic field, a tip location sensor designed to sense the magnetic field, and an ultrasound probe for ultrasonically imaging an internal portion of the patient. The magnetic field may provide magnetic field information for locating the magnetic assembly relative to the tip location sensor. The tip location sensor is designed to communicate the magnetic field information to the system console. The system console is designed to display an icon representative of a location of the magnetic assembly relative to the tip location sensor in the tip location mode.

Abstract: According to an aspect, there is provided a device (2) for monitoring the inhalation of airborne pollutant by a subject, the device (2) comprising a processing unit (4) configured to determine or receive measurements of the amount of airborne pollutant around the subject and the amount of air inhaled by the subject, and to combine the measurements to determine a measure of the amount of airborne pollutant inhaled by the subject. A corresponding method and computer program product are also provided.

Abstract: The present invention relates to a device for determining a respiratory feature of a subject based on a breathing gas generated by the subject when inhaling and/or exhaling, comprising an aerosol detection unit (12) for detecting an aerosol contained in a breathing gas generated by the subject, a deposition fraction measurement unit (14) for measuring a deposition fraction for the detected aerosol, wherein the deposition fraction indicates the fraction of aerosol deposited inside the subject over the total amount of the inhaled aerosol, and a respiratory feature determination unit (16) for determining the respiratory feature by relating the measured deposition fraction to a plurality of predetermined deposition fractions each corresponding to a different airway geometry of a respiratory tract.

Abstract: Methods and apparatus for detecting respiration phases are disclosed herein. An example apparatus for analyzing vibration signal data collected from a nasal bridge of a subject via a sensor to reduce errors in training an artificial neural network using the vibration signal data includes a feature extractor to identify feature coefficients of the vibration signal data. In the example apparatus, the artificial neural network is to generate a respiration phase classification for the vibration signal data based on the feature coefficients. The example apparatus includes a classification verifier to verify the respiration phase classification and an output generator to generate a respiration phase output based on the verification.

Abstract: Systems and methods for estimating a ventilatory threshold for a patient and estimating likelihood of pulmonary arterial hypertension are provided. An example method includes determining ratios of minute ventilation to rate of oxygen uptake based on breath-by-breath data for a patient. The example method also includes determining a ventilatory threshold based upon the determined ratios and determining a score based upon an end-tidal partial pressure of carbon dioxide (PetCO2) value at the determined ventilatory threshold and a minute ventilation/carbon dioxide production relationship (VE/VCO2) value at the determined ventilatory threshold. The method also includes using the score to estimate a likelihood that the patient has pulmonary arterial hypertension and causing the estimated likelihood to be displayed on a user interface.

Abstract: Systems and methods for quantifying the likelihood of the contribution of multiple possible forms of chronic disease to patient reported dyspnea can include the testing protocol having a flow/volume loop, performed at rest, flowed by the measurement of cardiopulmonary exercise gas exchange variables during rest, exercise and recovery as unique data sets. The data sets are analyzed using feature extraction steps to produce a pictorial image consisting of disease silos displaying the likelihood of the contribution of various chronic diseases to patient reported dyspnea. In some embodiments, the silos are split into subclass silos. In some embodiments, multiple chronic disease indexes are used to differentiate between sub-types of a particular chronic disease (e.g., differentiating WHO 1 PH from WHO 2 or WHO 3 PH). Test results are plotted serially to asses to provide feedback to the physician on the efficacy of therapy provided to the patient.

Abstract: The invention relates to an active orthosis system comprising a plurality of inertial sensors to be distributed over an upper limb, a lower limb, or any other part of the human body comprising at least one joint, said inertial sensors (1, 2, 3, 4) being designed so as to allow the determination of at least one angle formed by segments of said part of the human body, around said at least one joint. The invention is characterised in that said active orthosis system comprises an alert device for warning the user of the active orthosis system that said at least one angle has a value located outside a pre-determined range of comfort values.

Abstract: A method of measuring indications of hair type of a user, the method comprising the steps of: providing a mobile device; providing a reference card, the reference card including one or more reference markers; providing one or more of the user's hairs at the surface of the reference card; acquiring one or more images of said one or more hairs using the mobile device; identifying the path of each of the one or more hairs along the reference card; and calculating the diameter of each hair from the acquired image.

Abstract: A device for taking anatomical measurements uses an L-shaped beam, a clamp and an adjustment handle to measure the dimensions of body parts. The L-shaped beam is a rigid structure that functions as the main arm and the fixed jaw blade of a pair of lockable measurement calipers. Specifically, the L-shaped beam has a first leg and a second leg that are terminally connected to form a right angle. The clamp is a sleeved device that is slidably mounted onto the first leg of the L-shaped beam. This enables the user to slide the clamp along the first leg until the clamp is moved into a desired position. The user can then lock the clamp in place. The adjustment handle is a rigid beam that is terminally connected to the clamp. Thus positioned, the adjustment handle acts as the movable jaw blade for the pair of lockable measurement calipers.

Abstract: A method of three-dimensional measurement in an oral cavity includes conducting three-dimensional measurement on a measurement range in an oral cavity, detecting a measurement site in which measurement information is insufficient in a measurement result acquired in the three-dimensional measurement, notifying a start position at which re-measurement on the measurement site detected is to be started, re-measuring an area starting from the start position such that the area encompasses the measurement site, and adapting at least one characteristic site having characteristic information in a re-measurement result from the re-measuring, and at least one characteristic site having characteristic information in the measurement result from the three-dimensional measurement with respect to each other such that three-dimensional measurement information is created on the measurement range.

Abstract: A sensor device includes: an inertia sensor; an electric wave sensor; and a controller configured to control transmission power of an electric wave of the electric wave sensor in accordance with a gravity direction which is detected by the inertia sensor.

Abstract: A computer implemented method for determining a center of rotation of a bone, comprising the steps of: a) acquiring image data representing a plurality of images taken by a camera while the bone is being rotated about the center of rotation, wherein the images show a marker device attached to the bone; b) forming a plurality of image pairs from the image data, wherein each image pair comprises two different images; c) determining a first relative position of the marker device relative to the camera from a first image of an image pair; d) determining a second relative position of the marker device relative to the camera from a second image of the same image pair; e) calculating a transformation of the first relative position into the second relative position; f) repeating steps c) to e) for all image pairs to obtain a plurality of transformations; and calculating the location of the center of rotation of the bone relative to the marker device from the plurality of transformations.

Abstract: Devices for determining the likelihood that a user of a primary monitoring device (“PMD”) has developed a medical condition, generally comprising sensors coupled to the PMD, wherein the PMD detects changes to sensor readings over time, and wherein the changes indicate a change in the likelihood that a user of the PMD has developed a medical condition. In some embodiments, motion sensors are operably coupled to the PMD, and the PMD monitors and saves data relating to characteristics of motion detected, which are used to determine whether there has been a change in a likelihood that a user is undergoing a medical event. In further embodiments, the PMD comprises cameras, and the PMD monitors and saves data relating to movement of a user's eyes, which is utilized to determine whether there has been a change to a likelihood that the user is currently undergoing a medical event.

Abstract: A method, system, and computer-readable medium receive module configuration settings to configure a customized human movement examination module for a human movement examination item. A patient is instructed with audio instructions associated with the customized human movement examination module. A single camera is controlled having progressive scan capabilities according to the module configuration settings to allow recording of a performance by the patient of the human movement examination item. The recorded data is analyzed based on the information provided by the single camera to measure human movement exhibited by the patient.

Abstract: Techniques for user identification by a biometric monitoring device are disclosed. In one aspect, a method of operating a biometric monitoring device may involve measuring a weight of a user in response to detecting that the user is standing on a platform, determining, based on sensor data generated by a sensor, a user parameter indicative of the user's identification, identifying one of a plurality of user profiles as corresponding to the user based on a comparison of the user parameter to parameter values and a comparison of the measured weight of the user to weight values, and updating the identified user profile based on at least one of the measured weight and the user parameter.

Abstract: In one embodiment, an audio system can generate parametrically formulated noise signals. According to an embodiment, an audio system can both determine the hearing ability of an individual and increase the hearing ability of the individual by using parametrically formulated noise. According to an embodiment, an audio system can generate parametrically formulated noise having a power spectrum amplitude that is a function of an individual's hearing threshold across a range of frequencies as measured using parametrically formulated noise test signals.

Abstract: On-body units are provided and include a transcutaneous analyte sensor, electronic circuitry electrically coupled to the sensor, and an on-body housing having electrical contacts disposed thereon. The on-body housing comprises a substantially flat surface and a curved and convex surface opposite the substantially flat surface. Systems and methods including the on-body units are also provided. Methods for performing continuity measurements using on-body units are also provided. The methods include positioning an on-body unit (OBU) on a skin of a subject, contacting a continuity test instrument to the OBU; and performing a continuity measurement with the continuity test instrument. An AC signal may be provided across two electrical contacts, or a DC signal may be provided across two electrical contacts in opposite directions for the same amount of time. The measurement may be performed with one electrical contact, or with isolated electrical contacts.

Abstract: Generally, embodiments of the invention relate to self-powered analyte determining devices (e.g., electrochemical analyte monitoring systems) that include a working electrode, a counter electrode, and an optional resistance value, where the working electrode includes analyte sensing components and the self-powered analyte determining device spontaneously passes a current directly proportional to analyte concentration in the absence of an external power source. Also provided are systems and methods of using the, for example electrochemical, analyte sensors in analyte monitoring.

Abstract: Generally, methods, devices, and systems for generating a hybrid analyte level output are provided. The uncompensated analyte levels lag in time with respect to the lag-compensated analyte levels, and the hybrid analyte level output tracks between the uncompensated analyte levels and the lag-compensated analyte levels according to predetermined criteria.

Abstract: A detecting system includes a sensor and a receiving device. The sensor is introduced into a living body through a mouth of the living body, transmits time-point related information associated with a plurality of time points different from one another, detects a physical amount in the living body, and transmits detection information representing the detected physical amount at each of the plurality of time points. The receiving device receives the time-point related information transmitted by the sensor and is on standby for receiving the detection information transmitted by the sensor on the basis of the plurality of time points associated with the received time-point related information.

Abstract: The present invention relates to a method for determining a personalized estimate, the magnitude of an intended medical effect, a duration and a shape of this, for a drug, based on sections of data where a target biomarker and dose history have been recorded, wherein the personalized estimate of a finite impulse response model a=[a0, a2 . . . an] and the basal hepatic glucose production Gb is determined according to equations of the present invention. The present invention further relates to a system for controlling insulin delivery to a patient according to the method described in the present invention where the measured biomarker is glucose. The present invention further relates to a medical device performing the calculations according to the present invention.

Abstract: Devices, systems, and methods herein relate to managing a chronic condition such as diabetes. These systems and methods may obtain patient data from a plurality of devices, integrate the data for analysis of trends that may be presented to the patient and/or health care professional along with an actionable suggestion. In some variations, a method may include the steps of receiving analyte data generated by an analyte measurement device and patient data generated by a patient measurement device. One or more data trends may be generated by analyzing the analyte data against the patient data using a computing device. The device settings of one or more of the analyte measurement device and the computing device may be modified in response to one or more of the data trends.

Abstract: The present invention relates generally to variable stiffness transcutaneous medical devices including a distal portion designed to be more flexible than a proximal portion. The variable stiffness can be provided by a variable pitch in one or more wires of the device, a variable cross-section in one or more wires of the device, and/or a variable hardening and/or softening in one or more wires of the device.

Abstract: The present invention provides a device and methods of use related to the use of electrodes to detect the presence and abundance of various biochemical compounds of interest with high spatial and temporal resolution.

Abstract: A sensor (110), a sensor assembly (256) for detecting at least one analyte in a body fluid and methods of manufacturing a sensor (110) and a sensor assembly (256) for detecting at least one analyte in a body fluid are disclosed. The sensor (110) has at least one substrate (114). The sensor (110) further has at least two electrodes (116) applied to the substrate (114), wherein the electrodes (116) are adapted for detecting the analyte. The sensor (110) further has at least two contact pads (118) applied to the substrate (114) and at least two electrical traces (120) applied to the substrate (114). The electrical traces (120) electrically connect the electrodes (116) and the contact pads (118). The sensor (110) further comprises a sealing ring (134) fixedly applied to the substrate (114). The sealing ring (134) surrounds the contact pads (118).

Abstract: A fluid handling system for use in bodily fluid analysis. The system comprises a first fluid handling module configured to interface with a main instrument. The first fluid handling module has a first fluid handling network and the first fluid handling network includes an infusate passage and an infusion fluid pressure member suitable for moving fluid within the infusate passage. The fluid handling system also has a second fluid handling module separate from the first module which is configured to interface with the main instrument. The second fluid handling module has a second fluid handling network and at least one sample analysis cell which is accessible via the second fluid handling network. The first and second modules are configured to interconnect and provide fluid communication between the first and second fluid handling network and the sample cells.

Abstract: A biological fluid collection device that is adapted to receive a blood sample having a cellular portion and a plasma portion is disclosed. After collecting the blood sample, the biological fluid collection device is able to transfer the blood sample to a point-of-care testing device or a biological fluid separation and testing device. After transferring the blood sample, the biological fluid separation and testing device is able to separate the plasma portion from the cellular portion and analyze the blood sample and obtain test results.

Abstract: A needle assembly. The needle assembly enabling the analysis of fluid trapped in a flashback chamber after an insertion needle has been inserted into a patient's vein.

Abstract: A method for testing user experience, comprising steps of: acquiring test indicating information; releasing a main task and an auxiliary task according to the test indicating information, each auxiliary task includes the main task and a corresponding physical signal providing prompting effect or inhibiting effect to the main task; acquiring feedback response information of a subject corresponding to the main task and the auxiliary task. In the technical solution of the present disclosure, through comparison of feedback response information of the subject between the auxiliary task and the main task, the perception situation of the subject on physical signals can be determined, and through comparison of feedback response information of the subject between the auxiliary tasks, the perception situation of the subject on different physical signals can be determined, thereby improving the effectiveness of the test result on perception attributes of physical signals.

Abstract: The invention provides the supporting system for neurological state assessment and neurological rehabilitation, especially within cognitive and/or speech dysfunction, characterized in that, the processing unit (PU) is integrated with the screen (S), which is equipped with the touch input sensors (TIS), said camera and light sources work within infrared radiation, wherein the infrared camera (IFC) is integrated with at least two infrared light sources (ILS). The infrared light sources (ILS) and the infrared camera (IFC) are formed into a movable component (MC) in the way that the infrared light sources (ILS) are located symmetrically and uniaxially on both sides of the infrared camera (IFC) in the movable component (MC). The movable component (MC) is connected with the processing unit (PU) through the screen (S). In another aspect the invention provides the method for supporting of neurological state assessment and neurological rehabilitation, especially within cognitive and/or speech dysfunctions.

Abstract: A basic physical condition of a person is estimated. A biological state estimation device calculates a plurality of indexes indicating variations of states of bioregulation function elements, including an index ascribable to fluctuation highly correlated with a brain function, an autonomic nervous function, bodily and mental fatigue, or sensation, which are obtained from a bioregulation function element judging device, every predetermined judgment times set for the respective bioregulation function elements in advance to find time-series variations of the indexes. A basic physical condition estimating device analyzes the time-series variations in order of priorities. Consequently, it is possible to find a physical condition from fluctuation performance serving as a basis of a regulation system of a person in a basic physical condition estimation time which is set longer than the judgment times of the respective bioregulation function elements.

Abstract: A voided volume calculation unit automatically calculates a voided volume of a subject based on information for a weight value before voiding and information for the weight value after voiding that have been transmitted from a weight measurement unit. The memory unit takes the calculated voided volume of the subject as voided volume information, and makes association with additional information regarding voiding accepted by an additional information input accepting unit. Then, the memory unit records the pieces of information associated with each other as the voiding information. Therefore, it is possible to perform detailed management of the information regarding voiding.

Abstract: A system and method for non-invasive and/or non-contact measurement of a subject's tremor in the context of therapeutic intervention is presented. The system includes a memory, a communications interface, a sensor to measure a signal associated with position or motion of an extremity of the subject, and a processor. The processor is configured to receive the signal from the sensor. The processor is further configured to communicate, via the communications interface, the signal, login credentials, and position or motion data to a remote server coupled to a remote electronic health record database. The remote server is configured to receive the signal and perform an analysis that quantifies a severity of tremor based on the position or motion signals of the subject. The processor is configured to receive the analysis that quantified the severity of tremor and cause the quantified severity of tremor to be displayed via a display device.

Abstract: We report a method for detecting epileptic or non-epileptic seizures, comprising: receiving a heart rate of a patient; calculating a percentage change of the heart rate in reference to at least one of the patient's maximal heart rate, reserve heart rate, or a resting heart rate; detecting an epileptic seizure if the percentage increase in the heart rate reaches a threshold value; and taking at least one responsive action selected from issuing a warning, delivering a therapy, determining a seizure severity, or logging at least one of a date and time of occurrence of the seizure, its severity, the type of therapy, or its effect, in response to the detection. We also report a medical device system configured to implement the method. We also report a non-transitory computer readable program storage unit encoded with instructions that, when executed by a computer, perform the method.

Abstract: Described herein are systems and methods for contraction monitoring. For example, a system for contraction monitoring includes an electrode patch including at least two electrodes, and a sensor module configured to be connected to the electrode patch. In some embodiments, the sensor module includes a signal acquisition module, a signal processing module, a power management module, a sensor control module, and a memory module and/or a data transmission module. In some embodiments, a method for contraction monitoring includes measuring, using the signal acquisition module, bio-potential signals by providing at least two electrodes on the abdomen of a pregnant woman.

Abstract: Described herein are systems and methods for favorably coordinating a timing relationship between a musculoskeletal activity cycle and a cardiac cycle of a user. A method may include repetitively detecting a signal that correlates to a blood volume in the user; determining an actual value of the signal that varies with the timing relationship; computing a trend of the actual value of the signal; and adjusting the movement guidance based on the trend of the actual value. A system may include a prompt device configured to provide recurrently a movement guidance to the user for guiding performance of the rhythmic musculoskeletal activity; a sensor configured to provide a signal that correlates to a blood volume in the user; and a processor configured to determine an actual value of the signal that varies with the timing relationship and to adjust the movement guidance based on the trend of the actual value.

Abstract: A breathing circuit for use with a first gas set (FGS) and a second gas set (SGS), said circuit comprising means for keeping separate the FGS and SGS, and a means for sequentially delivering to a patient, first the FGS, and, on inspiration, when the patient inspires so as to deplete the supply of FGS into the circuit, subsequently delivers substantially SGS for the balance of inspiration.

Abstract: A system and method for positioning a pill to be ingested by a user in a field of view of an image acquisition camera. The method includes the steps of determining a desired location of the mouth of a user in a field of view of an image acquisition camera, determining a current position of a pill to be ingested by the user in the field of view of the image acquisition apparatus, and indicating on a display a movement to be made by the user to move the pill towards mouth of the user.

Abstract: A wearable electrode includes: a garment including an outer member and a backing member configured to cover at least a part of an inner surface of the outer member; and an electrode unit configured to come into contact with a living body clothed in the garment to acquire a biological signal emitted by the living body and attached to an opposite side of the backing member from the outer member. The outer member and the backing member are connected to each other in a part other than a part of the backing member, to which the electrode unit is attached.

Abstract: A patient monitor can noninvasively measure a physiological parameter using sensor data from a nose sensor configured to be secured to a nose of the patient. The nose sensor can include an emitter and a detector. The detector is configured to generate a signal when detecting light attenuated by the nose tissue of the patient. An output measurement of the physiological parameter can be determined based on the signals generated by the detector. The nose sensor can include an inner prong and an outer prong to assist the nose sensor in securing to a patient's nose. The detector can be coupled to an inner post of the inner prong and can be configured to secure to an interior or exterior portion of the patient's nose.

Abstract: Luminal organ sizing devices and methods. A method of the present disclosure includes the steps of introducing at least part of a first device into a luminal organ at an aperture or opening of an atrial appendage, the first device having a balloon positioned thereon, inflating the balloon at the aperture or opening until a point of apposition is achieved, and obtaining a first aperture or opening measurement based upon the point of apposition.

Abstract: This document describes ways in which to alter physiological signals to address corrupt, noisy, or otherwise faulty data. By so doing, accuracy and robustness in sensing and assessing a patient's cardiovascular health can be improved. These improved assessments permit better measures of health, such as relevant hemodynamics understood by heart rates, heart rate variability, cardiac arrhythmias, blood pressures, pulse-wave velocities, arterial stiffness, cardiac valve timing, thoracic fluids, ballistocardiogram force, photo-plethysmograms, blood oxygenation, and pressure-volume loops.

Abstract: Systems and methods for minimizing or eliminating transient non-glucose related signal noise due to non-glucose rate limiting phenomenon such as ischemia, pH changes, temperatures changes, and the like. The system monitors a data stream from a glucose sensor and detects signal artifacts that have higher amplitude than electronic or diffusion-related system noise. The system replaces some or the entire data stream continually or intermittently including signal estimation methods that particularly address transient signal artifacts. The system is also capable of detecting the severity of the signal artifacts and selectively applying one or more signal estimation algorithm factors responsive to the severity of the signal artifacts, which includes selectively applying distinct sets of parameters to a signal estimation algorithm or selectively applying distinct signal estimation algorithms.

Abstract: A cover is configured to be removably attached to and at least partially cover a hearing aid earpiece. The removable cover includes light transmissive material in at least one portion thereof that is configured to guide light from at least one optical emitter associated with the hearing aid earpiece to a region of a body of a subject wearing the hearing aid earpiece and/or guide light from the body of the subject to at least one optical detector associated with the hearing aid earpiece. The removable cover may include at least one alignment member that facilitates stability of the hearing aid earpiece when inserted within an ear of the subject. The removable cover may include at least one lens region, at least one light diffusion region, and/or at least one luminescence region in optical communication with the light transmissive material.